1 // Copyright Daniel Wallin 2006. Use, modification and distribution is
2 // subject to the Boost Software License, Version 1.0. (See accompanying
3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5 #ifndef BOOST_PARAMETER_TEMPLATE_KEYWORD_060203_HPP
6 # define BOOST_PARAMETER_TEMPLATE_KEYWORD_060203_HPP
8 # include <boost/mpl/and.hpp>
9 # include <boost/mpl/not.hpp>
10 # include <boost/type_traits/is_convertible.hpp>
11 # include <boost/type_traits/is_reference.hpp>
13 namespace boost
{ namespace parameter
{
18 struct template_keyword_tag
{};
20 template <class T
, class U
>
21 struct is_pointer_convertible
22 : is_convertible
<T
*, U
*>
26 struct is_template_keyword
28 mpl::not_
<is_reference
<T
> >
29 , is_pointer_convertible
<T
, template_keyword_tag
>
35 template <class Tag
, class T
>
36 struct template_keyword
37 : aux::template_keyword_tag
41 typedef value_type reference
;
44 }} // namespace boost::parameter
46 #endif // BOOST_PARAMETER_TEMPLATE_KEYWORD_060203_HPP